Quick answers
- Where does Benjamin J. Leeman see patients?
- Medicare's clinician data lists 1 practice location in Valley Stream, NY. Call before your visit to confirm the address.
- What is Benjamin J. Leeman's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Pulmonary Disease.
- Does Benjamin J. Leeman accept Medicare assignment?
- Yes. Medicare's clinician data says Benjamin J. Leeman accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Benjamin J. Leeman offer telehealth?
- Medicare's clinician data says Benjamin J. Leeman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Benjamin J. Leeman?
- (516) 599-8787, as listed in official Medicare / NPI Registry data.
- What is Benjamin J. Leeman's NPI number?
- 1174513998. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Benjamin J. Leeman is enrolled with Medicare (CMS data updated 2026-10-02).
- 20 W Lincoln Ave, Suite 306Valley Stream, NY 11580 (516) 599‑8787
Specialties
- Internal Medicineprimary
- Pulmonary Diseasealso
Other internal medicine doctors in Valley Stream
Clinicians with the same Medicare primary specialty in Valley Stream, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | State University Of New York At Stony Brook, School Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1174513998 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians